Web Technologies, Multimedia & IoT - Complete Guide
Last Updated: August 19, 2026 | Marks Weightage: ~10 Marks | BPSC CS Teacher
Master Web Technologies, Multimedia, and IoT with this comprehensive guide for the BPSC Computer Science Teacher exam.
1. Web Concepts
- WWW: World Wide Web (System of interlinked web pages)
- URL: Uniform Resource Locator (Web address)
- Website: Collection of web pages
- Webpage: Single document on the web
- Static Webpage: Content doesn't change
- Dynamic Webpage: Content changes based on user interaction
- Web Hosting: Storing website files on a server
2. Web Browsers
🌐 Popular Browsers
- Google Chrome
- Mozilla Firefox
- Microsoft Edge
- Safari
- Opera
🔧 Browser Features
- Plug-ins: Extensions for additional functionality
- Cookies: Small files stored on user device
- Settings: Privacy, security, appearance
3. HTML (HyperText Markup Language)
HTML is the standard markup language for creating web pages.
📝 Basic Structure
<!DOCTYPE html>
<html>
<head>
<title>My Page</title>
</head>
<body>
<h1>Hello World!</h1>
<p>This is a paragraph.</p>
</body>
</html>
4. XML (eXtensible Markup Language)
XML is used to store and transport data. It is both human-readable and machine-readable.
📝 XML Example
<student>
<name>John</name>
<age>20</age>
<course>Computer Science</course>
</student>
Key Difference: HTML is for display; XML is for data transport.
5. JavaScript Basics
JavaScript adds interactivity to web pages. It is client-side scripting.
📝 JavaScript Example
<script>
function greet() {
alert("Hello, " + document.getElementById("name").value);
}
</script>
- Variables: var, let, const
- Data Types: Number, String, Boolean, Object
- Functions: function name() { }
- Events: onclick, onchange, onload
6. Web Publishing
- Content Management Systems (CMS): WordPress, Joomla, Drupal
- FTP (File Transfer Protocol): Uploading files to server
- Domain Name: Website address (e.g., example.com)
- Web Hosting: Shared, VPS, Dedicated, Cloud
7. Multimedia
🎨 Graphics
- Raster (JPG, PNG, GIF)
- Vector (SVG, EPS)
- Formats: JPEG, PNG, GIF, SVG
🎵 Audio & Video
- Audio: MP3, WAV, AAC
- Video: MP4, AVI, MOV, MKV
- VoIP: Voice over IP (Skype, Zoom)
- Video Conferencing: Google Meet, Teams
8. E-Commerce
E-Commerce: Buying and selling goods/services online.
- B2B: Business to Business
- B2C: Business to Consumer
- C2C: Consumer to Consumer
- C2B: Consumer to Business
9. Internet of Things (IoT)
🌐 What is IoT?
IoT connects physical devices to the internet, enabling them to communicate and interact.
- Sensors: Temperature, motion, pressure
- Actuators: Motors, lights, switches
- Connectivity: Wi-Fi, Bluetooth, 5G
📱 Applications
- Smart Cities: Traffic management, smart lighting
- Smart Homes: Smart locks, thermostats, lights
- Healthcare: Wearable health monitors
- Agriculture: Smart irrigation, crop monitoring
10. Frequently Asked Questions
❓ What is the difference between HTML and XML?
HTML is for displaying data; XML is for transporting and storing data.
❓ What is JavaScript used for?
JavaScript is used for adding interactivity and dynamic behavior to web pages.
❓ What is IoT?
Internet of Things - connecting physical devices to the internet.
❓ What is the difference between Static and Dynamic websites?
Static websites have fixed content; Dynamic websites change content based on user interaction.
